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Improved Stability of Zeolitic Imidazolate Framework-8 Photocatalytic Coating on Polyurethane Foam Via Polyelectrolyte Multilayer Surface Modification

See — Polycrystalline zeolitic imidazolate framework-8 (ZIF-8) layers have been coated on polyurethane (PU) foam substrate by a combined seed anchoring and secondary growth process. A polyelectrolyte multilayers (PEMs) primer was used to enhance the initial anchoring of the ZIF-8 seed crystals on the PU surface. X-Ray diffraction confirmed that the three-step process (PEM primer, MOF seed adsorption, secondary growth) produced a dense and homogeneous coating of ZIF-8 crystals on the PU foam substrate. The thickness of the ZIF-8 coating was observed by scanning electron microscopy (SEM) and was found to increased from 270 nm to 420 nm…
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